Insoluble are particles that accumulate in combustion engines as a result of the fuel burning in the engine. They consist of debris from the combustion process and oil oxidation products in the lubrication oil.

Regular monitoring of insoluble helps to prevent lacquer formation on hot surfaces,
sticking of piston rings, wear of cylinder liner, and bearing surfaces.

The detergent property of the oil will also decrease, speeding up further deterioration.
  • Detect insoluble from diesel engine combustion such as partially oxidized fuel,
carbon, fuel ash, oil oxidation products and used lubricant additives.
  • Simple and quick to use even for untrained people.
  • The insoluble tests give you actionable results, helping to maintain your engine.